YUNG-JEN HSU2018-09-102018-09-102007http://www.springerlink.com/content/ck571364v342j580/?p=c257f71f1c0b4507aff64910f806dde9&pi=1http://scholars.lib.ntu.edu.tw/handle/123456789/333272GETA Sandals: A Footstep Location Tracking Systemjournal articlehttp://dx.doi.org/10.1007/s00779-006-0098-z